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AIM

10/12/17

5−2−2

Departure Procedures

responsible civil aviation authority, and file appropri-

ate equipment information in ICAO field 10a and in

the ICAO field 18 DAT (Other Data Applications) of

the flight plan.

5−2−3. IFR Clearances Off Uncontrolled

Airports

a. Pilots departing on an IFR flight plan should

consult the Chart Supplement U.S. to determine the

frequency or telephone number to use to contact

clearance delivery. On initial contact, pilots should

advise that the flight is IFR and state the departure and

destination airports.

b. Air traffic facilities providing clearance deliv-

ery services via telephone will have their telephone

number published in the Chart Supplement U.S. of

that airport’s entry. This same section may also

contain a telephone number to use for cancellation of

an IFR flight plan after landing.

c. Except Alaska, pilots may also contact Flight

Service’s dedicated clearance delivery hotline at

1−888−766−8267.

5−2−4. Taxi Clearance
Pilots on IFR flight plans should communicate with

the control tower on the appropriate ground control or

clearance delivery frequency prior to starting en-

gines, to receive engine start time, taxi, and/or

clearance information.

5−2−5. Line Up and Wait (LUAW)

a. Line up and wait is an air traffic control (ATC)

procedure designed to position an aircraft onto the

runway for an imminent departure. The ATC

instruction “LINE UP AND WAIT” is used to instruct

a pilot to taxi onto the departure runway and line up

and wait.

EXAMPLE−

Tower: “N234AR Runway 24L, line up and wait.”

b. This ATC instruction is not an authorization to

takeoff. In instances where the pilot has been

instructed to line up and wait and has been advised of

a reason/condition (wake turbulence, traffic on an

intersecting runway, etc.) or the reason/condition is

clearly visible (another aircraft that has landed on or

is taking off on the same runway), and the

reason/condition is satisfied, the pilot should expect

an imminent takeoff clearance, unless advised of a

delay. If you are uncertain about any ATC instruction

or clearance, contact ATC immediately.

c. If a takeoff clearance is not received within a

reasonable amount of time after clearance to line up

and wait, ATC should be contacted.

EXAMPLE−

Aircraft: Cessna 234AR holding in position Runway 24L.

 

Aircraft: Cessna 234AR holding in position Runway 24L

at Bravo.
NOTE−

FAA analysis of accidents and incidents involving aircraft

holding in position indicate that two minutes or more

elapsed between the time the instruction was issued to line

up and wait and the resulting event (for example, land−over

or go−around). Pilots should consider the length of time

that they have been holding in position whenever they

HAVE NOT been advised of any expected delay to

determine when it is appropriate to query the controller.

REFERENCE−

Advisory Circulars 91−73A, Part 91 and Part 135 Single−Pilot Proced-

ures during Taxi Operations, and 120−74A, Parts 91, 121, 125, and 135

Flightcrew Procedures during Taxi Operations

d. Situational awareness during line up and wait

operations is enhanced by monitoring ATC

instructions/clearances issued to other aircraft. Pilots

should listen carefully if another aircraft is on

frequency that has a similar call sign and pay close

attention to communications between ATC and other

aircraft. If you are uncertain of an ATC instruction or

clearance, query ATC immediately. Care should be

taken to not inadvertently execute a clearance/

instruction for another aircraft.

e. Pilots should be especially vigilant when

conducting line up and wait operations at night or

during reduced visibility conditions. They should

scan the full length of the runway and look for aircraft

on final approach or landing roll out when taxiing

onto a runway. ATC should be contacted anytime

there is a concern about a potential conflict.

f. When two or more runways are active, aircraft

may be instructed to “LINE UP AND WAIT” on two

or more runways. When multiple runway operations

are being conducted, it is important to listen closely

for your call sign and runway. Be alert for similar

sounding call signs and acknowledge all instructions

with your call sign. When you are holding in position

and are not sure if the takeoff clearance was for you,

ask ATC before you begin takeoff roll. ATC prefers

3/15/07

7110.65R CHG 2

AIM

9/13/18